Model hs-018 Tv system pal ntsc Validity pixel p:720(h)íß576(v) n:720(h)íß480(v) Image sensor 1/4ís/1/3ísccd Horizontal definition 420 tv line Angular field of view 45íp(f=6mm) Ir view distance 10m/15m/20m/25m/30m/35m/40m/50m/80m Led 8pcs/12pcs/18pcs/24pcs/30pcs/36pcs/42pcs/48pcs Led switch auto Minimum illumination 0 lux Agc auto Synchronization system internal Scanning frequency(h) 15.625khz 15.734khz Scanning frequency(v) 50hz 60hz Backlight compensation auto Electronic shutter 1/50(1/60)~1/100.000sec White balance auto S/n ratio >48db Gamma correction >0.45 Operation temperature -10~+50/+14~+122íµ/¿h Operation humidity 85%rh Power adapter dc12v/500ma Oem